Hello! This is not a problem per se, because i can use flawlessly Direct3d 9 instead, but given that D3D11 has more options i would like to solve it... I tried many settings (mainly playing with internal resolutions, AA etc)

Nope happened to me as well. My GPU is certainly not low end, but something broken in the backend that prevents the games from scaling the IR properly. Definitely didn't happen in the DirectX9 backend.

It's a normal issue with the d3d11 backend that was recently fixed. And for the record the d3d9 backend doesn't use MSAA, it uses SSAA.

"Normally if given a choice between doing something and nothing, I’d choose to do nothing. But I would do something if it helps someone else do nothing. I’d work all night if it meant nothing got done."
-Ron Swanson

"I shall be a good politician, even if it kills me. Or if it kills anyone else for that matter. "
-Mark Antony

"Normally if given a choice between doing something and nothing, I’d choose to do nothing. But I would do something if it helps someone else do nothing. I’d work all night if it meant nothing got done."
-Ron Swanson

"I shall be a good politician, even if it kills me. Or if it kills anyone else for that matter. "
-Mark Antony

"Normally if given a choice between doing something and nothing, I’d choose to do nothing. But I would do something if it helps someone else do nothing. I’d work all night if it meant nothing got done."
-Ron Swanson

"I shall be a good politician, even if it kills me. Or if it kills anyone else for that matter. "
-Mark Antony